A new anion-deficient fluorite-related super structure of Bi₂₈V₈O₆₂

Author(s)

Tamara Đorđević, Ljiljana Karanovic

Abstract

New hydrothermally synthesized Bi

₂₈V

₈O

₆₂was structurally characterized using single-crystal X-ray diffraction data. Bi

₂₈V

₈O

₆₂crystallizes in the novel type of defect fluorite structure related to the face-centered cubic δ-Bi

₂O

₃. It is monoclinic, s. g. P2

₁/c, and the relation to the fluorite subcell is given as a~(3/2)a

_F+(3/2)c

_F; b~ -b

_F; c~2a

_F-4c

_F(F in subscript indicate the unit cell parameter of fluorite). Its structure is characterized by slabs of edge sharing OBi

₄tetrahedra surrounded by the OBi

₃triangles. As a part of these OBi

₃triangles, two positionally disordered Bi

³⁺cations were observed in the marginal part of the slabs. The slabs are extending along b axis and are linked by inter-slab portion of the structure composed of VO

₄tetrahedra and BiO

_6-xcoordination polyhedra, where x is a number of vacant oxygen sites. Raman spectra verified the coordination environment of vanadium atoms in the structure.

Organisation(s)

Department of Mineralogy and Crystallography

External organisation(s)

University of Belgrade

Journal

Journal of Solid State Chemistry

Volume

220

Pages

259-269

No. of pages

11

ISSN

0022-4596

DOI

https://doi.org/10.1016/j.jssc.2014.09.010

Publication date

09-2014

Peer reviewed

Yes

Austrian Fields of Science 2012

104011 Materials chemistry, 105113 Crystallography, 1030 Physics, Astronomy

Keywords

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Ceramics and Composites, Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry

Portal url

https://ucrisportal.univie.ac.at/en/publications/a-new-aniondeficient-fluoriterelated-super-structure-of-bi28v8o62(271a7f56-7208-46f3-95ae-aa5160777b7c).html